Effect of Heat Treatment Processes on Wear Behavior of TC21 Titanium Alloy. | ||||
| The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) | ||||
| Volume 107, Issue 1, 2018, Page 12-22 PDF (1.51 MB) | ||||
| Document Type: Original research papers | ||||
| DOI: 10.21608/tims.2018.198130 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
K. M. Ibrahim1; A. F. Barakat2; R. N. Elshaer  1; R. R. Abbas2
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| 1Central Metallurgical R & D Institute, Cairo, Egypt. | ||||
| 2Faculty of Engineering, Helwan University, Cairo, Egypt. | ||||
| Abstract | ||||
| The effect of heat treatment on microstructure and wear behavior of TC21 (Ti-6Al-2Sn-2Zr-3Mo-1Cr-2Nb-Si, wt.%) Ti-alloy was investigated. The samples were solution treated at 900°C for 15 min followed by furnace cooling to 800°C with a cooling rate 1°C/min and holding for 20 min, then the samples cooled down to room temperature either using water quenching (WQ) or air cooling (AC). Consequently, aging treatment was applied at 575°C for 4 hr. The microstructure feature showed a secondary α phase (αRsR) precipitated in residual β phase due to the step cooling from 900°C to 800°C inside furnace as well as the aging treatment. The highest wear rate was obtained for WQ samples due to increasing in volume fraction of αRp R(58%). However, the lowest wear rate was reported for WQ +Aging samples due to the high hardness. | ||||
| Keywords | ||||
| TC21 Ti-alloy; Cooling rate; Aging; Microstructure; Hardness; Wear | ||||
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